--- old/src/hotspot/share/ci/ciMetadata.hpp	2019-09-11 16:31:17.000000000 +0200
+++ new/src/hotspot/share/ci/ciMetadata.hpp	2019-09-11 16:31:12.000000000 +0200
@@ -63,6 +63,7 @@
   virtual bool is_obj_array_klass() const   { return false; }
   virtual bool is_type_array_klass() const  { return false; }
   virtual bool is_wrapper() const           { return false; }
+  virtual bool flatten_array() const        { return false; }
   virtual void dump_replay_data(outputStream* st) { /* do nothing */ }
 
   ciMethod*                as_method() {